Correct py got error on another windows 7

[meetinnet]

Traceback shows that you didn't supply filename.

usage: if filename = myfile.txt,command: chardet2 myfile.txt

example (from command line):

Output:
$ chardet results.txt
results.txt: ascii with confidence 1.0

The same way on windows system ? But I got this "is not recognized as an internal or external command" after runinng "E:\Python\chardet2 cookie.txt" which I don't think it's a regular command.

Installing collected packages: chardet2
  Running setup.py install for chardet2 ... done
Successfully installed chardet2-2.0.3